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Finding the Fourth Proportional to 251,065.85, 346,469.78 and 136,343.68

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Solution

The fourth proportional to 251,065.85, 346,469.78 and 136,343.68 is: 188,153.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,065.85 : 346,469.78 = 136,343.68 : x
  2. Step 2: Convert to fraction form
    251,065.85/346,469.78 = 136,343.68/x
  3. Step 3: Cross multiply
    251,065.85x = 346,469.78 × 136,343.68
  4. Step 4: Simplify right side
    251,065.85x = 47,238,964,288.68
  5. Step 5: Solve for x
    x = 47,238,964,288.68/251,065.85
  6. Step 6: Final answer
    x = 188,153.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.